AS151379 OPTAGE Inc.

NCJ - OPTAGE Inc. · registered in Japan

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Japan#718largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#71,844of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS151379 in ASN lookup Look up an IP in this network (36.50.252.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

36.50.252.0/24

Other ASNs named OPTAGE Inc.

2 other networks use the same organisation name; together with AS151379 they announce 3,002,880 IPv4 addresses.

ASNNameIPv4 addresses

AS17511OPTAGE - OPTAGE Inc. JP2,994,432

AS9358Finder - OPTAGE Inc. JP8,192

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS146982#715 SHINNYO-LIVE - Shinnyo-en256

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AS151377#717 SHR-OSA-NET - Solare Hotels and Resorts Co., Ltd.256

AS152724#719 POINT72-AS-AP - Point72 Japan Limited256

AS152859#720 U-Cloud-3 - UNIADEX, LTD.256

AS152869#721 ICJ-NET - ICJ, Inc.256

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources